Inter and Intra prediction across slice

[micromad]

It is stated in all the documents that inter and intra prediction are not allowed across the slice. However, it seems not true from my experiments...
I encoded the video sequence as "one row of MB as a slice", then corrupted one slice only through packet loss. After the decoding, I've seem some deterioration expanding over the slice in the following frames.

Can anybody explain to me what causes this effect? Its the nature of inter prediction or Skip mode or something else?

I've attached a screenshot. you can see the effect clearly on the right edge.

Thanks!:thanks:

[akupenguin]

Forbidding of inter prediction across slices refers to the mvs themselves, which would normally be predicted from neighboring blocks in the same frame, but not if those blocks are in another slice. The pixels that the mvs point to can still be anywhere in the previous frames.

[micromad]

Thank you so much for answering! :thanks:

[micromad]

Following this topic: may i say the "scattering" of the errors from previous frames is decided by the MVs and search range? is there any other parameter related?
Thanks!

[akupenguin]

The scattering is determined entirely by MVs. And the MVs are determined mostly by what motion is present in the video content. The scattering visible in your screenshot is small enough that I expect it not to have been limited by search range.